MPD: lib/curl/Multi.hxx Source File

MPD 0.20.15

Multi.hxx
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1 /*
2 * Copyright (C) 2016 Max Kellermann <max.kellermann@gmail.com>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the
14 * distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
20 * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
27 * OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef CURL_MULTI_HXX
31 #define CURL_MULTI_HXX
32
33 #include <curl/curl.h>
34
35 #include <utility>
36 #include <stdexcept>
37 #include <cstddef>
38
42 class CurlMulti {
43 CURLM *handle = nullptr;
44
45 public:
51 CurlMulti()
52 :handle(curl_multi_init())
53 {
54 if (handle == nullptr)
55 throw std::runtime_error("curl_multi_init() failed");
56 }
57
61 CurlMulti(std::nullptr_t):handle(nullptr) {}
62
63 CurlMulti(CurlMulti &&src):handle(std::exchange(src.handle, nullptr)) {}
64
65 ~CurlMulti() {
66 if (handle != nullptr)
67 curl_multi_cleanup(handle);
68 }
69
70 operator bool() const {
71 return handle != nullptr;
72 }
73
74 CurlMulti &operator=(CurlMulti &&src) {
75 std::swap(handle, src.handle);
76 return *this;
77 }
78
79 CURLM *Get() {
80 return handle;
81 }
82
83 template<typename T>
84 void SetOption(CURLMoption option, T value) {
85 auto code = curl_multi_setopt(handle, option, value);
86 if (code != CURLM_OK)
87 throw std::runtime_error(curl_multi_strerror(code));
88 }
89 };
90
91 #endif
CurlMulti::CurlMulti
CurlMulti(std::nullptr_t)
Create an empty instance.
Definition: Multi.hxx:61
CurlMulti::~CurlMulti
~CurlMulti()
Definition: Multi.hxx:65
CurlMulti::CurlMulti
CurlMulti()
Allocate a new CURLM*.
Definition: Multi.hxx:51
CurlMulti::Get
CURLM * Get()
Definition: Multi.hxx:79
CurlMulti::operator=
CurlMulti & operator=(CurlMulti &&src)
Definition: Multi.hxx:74
CurlMulti
An OO wrapper for a "CURLM*" (a libCURL "multi" handle).
Definition: Multi.hxx:42
CurlMulti::CurlMulti
CurlMulti(CurlMulti &&src)
Definition: Multi.hxx:63
CurlMulti::SetOption
void SetOption(CURLMoption option, T value)
Definition: Multi.hxx:84